Back in Febuary, Mick Jagger led a blues performance at the White House featuring Jeff Beck, Buddy Guy, Booker T. Jones and other musicians. What President Obama enjoyed almost as much as the show itself was watching Jagger rehearsing the night before. "It was really nice to watch him just trying to work through the numbers with the house band, treating them with respect, and caring about the music," Obama told Rolling Stone editor and publisher Jann S. Wenner during an interview in early April in the Oval Office.